Substitution method of simultaneous equations
3x-4y=7
2x+y=12

Answer:

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

Answer:

The answer D is correct.

Step-by-step explanation:

-x + y = 8 ⇒ ( 1 )

7x + 3y = - 16 ⇒ ( 2 )

y = 8 + x ⇒ ( 3 )

Let us take equation 2 and let us replace y with (8+x).

Let us solve and find the value of x.

7x + 3y = -16

7x + 3 ( 8 + x ) = - 16

7x + 24 + 3x = -16

10x + 24 = -16

10x = -16 - 24

10x = -40

And now let us find the value of y.

For that, let us use equation (3)

Here, we have to replace x with -4 to find the value of y.

y = 8 + x

y = 8 - 4

Now we have to the answers in the form ( x , y )

Let us write.

( x , y ) ⇒ ( -4 , 4 )

Let me know if you have any other questions. :-)

Hey there!

GUIDE:

• Difference means subtract/subtraction

• Product means multiply/multiplication

• Sum means add/addition

• Quotient means divide/division

• Of means multiply

• Per means divide

QUESTION SUMMARIZES TO:
“1/4 of the product of 12 and 3”

FINDING the ANSWER:

‘Of the product’ sounds about like you’re multiplying a number 1/4 of a number or two that’s inside of parentheses noting that you’re multiply.

So, the overall answer should be:

1/4 × (12 × 3)

⇱ ⇱

Answer to your question

IF YOU WERE TO SIMPLIFY IT:

1/4 × (12 × 3)

= 1/4 × 36

= 9

The answer would most likely be: 9

ANYWAYS NOW THAT WE HAVE THAT INFORMATION OUT OF THE WAY WE CAN LABLE YOUR ANSWER

Answer: Option C. 1/4 × (12 × 3)

Good luck on your assignment & enjoy your day!!

~Amphitrite1040:)

We need 1/6 cup of butter to be used to make 1/4 batch of cookies.

Word problems in mathematics are real-life cases that involve a critical understanding of the problem and the use of arithmetic operations(e.g addition, subtraction, division, and multiplication) when solving them.

From the parameters given:

The required cup of butter to be used can be estimated as follows:

Let x be the unknown cup of butter, by cross multiplying;

[tex]\mathbf{x = \dfrac{\dfrac{2}{3}\times \dfrac{1}{4}}{1} }[/tex]

x = 1/6 cup of butter.

Learn more about word problems here:

https://brainly.com/question/2138273

Answer:

69%

Step-by-step explanation:

Using the formula exactly for this situation:

((((6^2 * 10) + sqrt((5000*3) - 600)) / 4! ) * 3.5 ) - log(1 * 10^11) =

69

Answer:

840

Step-by-step explanation:

1st u have to multiple 280 by 3

Answer:

$1.98.

Step-by-step explanation:

Given the following question:

5% of $13.15

To find the answer we simply use the formula to calculate percentage.

[tex]\frac{t\times i}{100}[/tex]
[tex]\frac{15\times13.15}{100} =15\times13.15=197.25\div100=1.9725[/tex]
[tex]1.9725[/tex]
Round to the nearest cent:
[tex]1.9725[/tex]
[tex]2<5[/tex]
[tex]1.98[/tex]

The sales tax was "$1.98."

Hope this helps.

Answer:

15/4

Step-by-step explanation:

multiply the whole number (3) by the denominator (4), then add the numerator (3) then put that over the denominator to convert any mixed number into an improper fraction.

Answer:

Step-by-step explanation:

Do the denominator times the whole number. Then add the numerator as well. Next that answer is your numerator and then you add the denominator of the fraction to the improper fraction

Answer:

$56.35

Step-by-step explanation:

Ok so heres how I got through this in school. Take the 49 and divide it by the 100 meaning 100 percent. You take the 0.49 times the 15 percent to get 7.35. Lastly, you add the 49 dollars and the 7.35 together to get 56.35.

Answer:

180

Step-by-step explanation:

5*36=180

Answer: x = 36, y = 10, and z = -25

Step-by-step explanation:

99 and -3z +6 are same side interior angles, so they sum to 180 degrees.

99 -3z + 6 = 180

-3z = 75

z = -25

Opposite angles of a parallelogram are congruent

2x + 9 = -3x + 6

2x + 9 = 75 + 6

2x = 81 - 9

2x = 72

x = 36

9y + 9 = 99

9y = 90

y = 10

According to definition of parallelogram

[tex]\\ \rm\hookrightarrow 2x+9+99=180[/tex]

[tex]\\ \rm\hookrightarrow 2x+108=180[/tex]

[tex]\\ \rm\hookrightarrow 2x=72[/tex]

[tex]\\ \rm\hookrightarrow x=36[/tex]

And

And

Answer:

x = 3 and y = 11 is the answer.

in graph, this is an intersecting lines which means it has one solution.

Step-by-step explanation:

4x + y = 23

y = x + 8

arranged:

4x + y = 23

-x + y = 8

4x + y = 23

4 (-x + y = 8)

4x + y = 23

-4x + 4y = 32

———————

0 + 5y = 55

5y/5 = 55/5

y = 11

substitute:

y = 11

y = x + 8

11 = x + 8

11 - 8 = x

3 = x

Answer:

17 is the right answer

Answer:

11:36 I believe

Step-by-step explanation:

The second one went up by 34, followed by 36 so the third one should go up by 38

The missing number of the given sequence will be 11:35. Then the correct option is D.

The complete question is as follows:-

9:47, 10:21, 10:57, ?, 12:15

Answer choices given below

a) 11:33

b) 12:01

c) 11:31

d) 11:35

A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.

The sequence will be given as

9:47, 10:21, 10:57, ?, 12:15

The difference between the 2 numbers is increased by the 2.

Then the difference between 10:57 and 10:21 will be 36.

Then the difference between the next number and 10:57 will be 38. Then the next number will be

→ 10: 57 + 00:38

→ 11: 35

Thus, the next number will be 11:35.

More about the sequence link is given below.

brainly.com/question/21961097

#SPJ5

Answer:

[tex]\huge\boxed{\sf{(-7, -9)}}[/tex]

Step-by-step explanation:

Hello.

First, find the x-coordinates of Phoenix.

Find the x-axis and count down.

The x-coordinate is -7.

Now, what about the y-coordinate?

The y-coordinate is -9.

Thus, the ordered pair is (-7, -9)

I hope it helps.

Have a nice day.

[tex]\boxed{imperturbability}[/tex]

Answer:

shorn male = 20%

Step-by-step explanation:

The probability that the escaped lamb is a shorn male is 1/5 or 0.2, which is 20%.

To find the probability that the escaped lamb is a shorn male, we need to calculate the ratio of shorn male lambs to the total number of lambs.

Number of shorn male lambs = 10

Total number of lambs = 22 (male) + 28 (female) = 50

Probability = (Number of shorn male lambs) / (Total number of lambs)

Probability = 10 / 50

Probability = 1 / 5

So, the probability that the escaped lamb is a shorn male is 1/5 or 0.2, which is 20%.

To know more about probability:

https://brainly.com/question/32117953

#SPJ3

Step-by-step explanation:

Apply the formula

V=ah

and try to solve if you can't comment down

I will do and send you

Answer:

B. 20

Step-by-step explanation:

Because it is twice as much as expected.

Answer:20

Step-by-step explanation:

Answer:

4 is the answer

Step-by-step explanation:

I hope this helps

Answer:

yeah then the ans is 11

Step-by-step explanation:

.........

Answer:

8:10am

Step-by-step explanation:

You have to leave home because it takes you 15 minutes to walk to the bus stop so that will be 8:25am

takes you half an hour to get to job 8:55am

then 5 minutes to check in and you will be on time

Answer 8:10am

Answer:

10.12

Step-by-step explanation:

Because each can cost 0.92 so what's 0.92 x 11=10.12

Hope it helps have a great afternoon:)

answer:

sale price: $5

explanation:

total price is always 100%

sale price is 80% off,

sale price: 100% - 80% = 20%

solve:

→ 20% * $25

→ $5

Answer:

$5

Step-by-step explanation:

[tex]25\times(1-80)\\25\times(1-0.8)[/tex]

Calculate the sum or difference

[tex]25\times0.2[/tex]

Calculate the product or quotient

[tex]5[/tex]

I hope this helps you

:)

Answer:

1.45 meters

Step-by-step explanation:

1 dm = 0.1 meter

14.5 x 0.1 = 1.45

you move the decimal point one place to the left turning 14.5 to 1.45

Answer:

1.45

Step-by-step explanation :

1 decimeter is equal to 0.1 meters

Answer:

Take the attached image and use it to solve the problem.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

A

if the x-axis is the "mirror", then everything above the x-axis ends up below the x-axis with the same distances from x- and y-axis. and vice versa.

so, the y-value goes from y to -y. but the x-value stays the same, because nothing changed regarding the distance and left-right position from the y-axis.

B

if the y-axis is the "mirror", then everything right of the y-axis ends up left of the y-axis with the same distances from x- and y-axis. and vice versa.

so, the x-value goes from x to -x. but the y-value stays the same, because nothing changed regarding the distance and the above-below position from the x-axis.

C

this line is just going diagonally in 45° inclination from the bottom left to the top right (and passing through the origin, of course).

yes, everything you mirror around it, will simply go upside down, and the coordinates will trade places.

D

this should create a line perpendicular to the line in C, going diagonally with an inclination of -45° from top left to the bottom right.

as in C this makes the coordinates trade places, but it will not change its signs.

Answer:

18 students

Step-by-step explanation:

90 percent of 20 is 18. 75 percent of 20 is 15.So More than 15 students .

Answer:

baddie uwu

Step-by-step explanation:

harder daddy harder

Answer:

I don't know i have no answer too

Step-by-step explanation:

Sorry again i need answer too

Answer:

b d d

Step-by-step explanation: i did it on edge

Answer:

Step-by-step explanation:

2>-4  add -2    : 2+-2>-4+-2

0>-6

Answer:

0 > -6

Step-by-step explanation:

2 + (-2) = 0

-4 + (-2) = -6

Answer

The critical value of z is -1.28

Z = -1.28